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Er:YAG laser for brackets bonding: a SEM study after debonding.

G Ierardo1, G Di Carlo1, F Petrillo1

  • 1Department of Oral and Maxillofacial Science, "Sapienza" University of Rome, Via Caserta 6, 00161 Rome, Italy.

Thescientificworldjournal
|November 19, 2014
PubMed
Summary
This summary is machine-generated.

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Erbium:YAG (Er:YAG) laser treatment alone did not offer significant advantages over traditional phosphoric acid etching for orthodontic bracket bonding. Further research is needed to explore combined laser and acid methods for improved adhesion.

Area of Science:

  • Dental materials science
  • Laser dentistry
  • Orthodontics

Background:

  • Erbium:YAG (Er:YAG) lasers offer an alternative for hard tissue ablation in dentistry.
  • Laser enamel etching presents a potential method for orthodontic bracket adhesion.

Purpose of the Study:

  • To evaluate the efficacy of Er:YAG laser irradiation, alone and in combination with phosphoric acid, for enamel etching in orthodontic applications.
  • To compare the bond strength of orthodontic brackets prepared with different etching methods.

Main Methods:

  • 55 human third molars were divided into five groups.
  • Groups were treated with 37% orthophosphoric acid, Er:YAG laser (80 mJ/4 Hz or 40 mJ/10 Hz), or a combination of laser and acid.
  • The adhesive remnant index was assessed after bracket debonding.

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Main Results:

  • Statistical analysis revealed significant differences in bond strength between laser-only groups (Groups 2 and 4) and the control group.
  • No significant differences in bond strength were observed between the combined laser and acid groups (Groups 3 and 5) and the control group.

Conclusions:

  • Er:YAG laser application alone does not provide superior bonding performance compared to conventional phosphoric acid etching for orthodontic brackets.
  • Combined laser and acid etching protocols did not show significant advantages over phosphoric acid alone.